Find the central angle, in degrees, with the radius being 10 cm and the angle is subtended by an arc of length 8.2 cm

faster, im not sure why but i know it is faster

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is:

the answer would be 0.54